CA2509858A1 - Method and apparatus for optical signal transmission - Google Patents

Method and apparatus for optical signal transmission Download PDF

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Publication number
CA2509858A1
CA2509858A1 CA002509858A CA2509858A CA2509858A1 CA 2509858 A1 CA2509858 A1 CA 2509858A1 CA 002509858 A CA002509858 A CA 002509858A CA 2509858 A CA2509858 A CA 2509858A CA 2509858 A1 CA2509858 A1 CA 2509858A1
Authority
CA
Canada
Prior art keywords
transmission link
signals
bias
transmitting
modulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002509858A
Other languages
French (fr)
Other versions
CA2509858C (en
Inventor
Douglas M. Gill
Xiang Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia of America Corp
Original Assignee
Lucent Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of CA2509858A1 publication Critical patent/CA2509858A1/en
Application granted granted Critical
Publication of CA2509858C publication Critical patent/CA2509858C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5055—Laser transmitters using external modulation using a pre-coder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
    • H04B10/25137—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using pulse shaping at the transmitter, e.g. pre-chirping or dispersion supported transmission [DST]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2543—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to fibre non-linearities, e.g. Kerr effect
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2572—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to forms of polarisation-dependent distortion other than PMD
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5057—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output
    • H04B10/50575—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output to control the modulator DC bias
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H04B10/5167—Duo-binary; Alternative mark inversion; Phase shaped binary transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Optical Communication System (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

A method and apparatus for transmission of optical signals across an optical transmission link wherein duobinary signals or inverse-data signals are transmitted when the chromatic dispersion of the transmission link is above or below a dispersion threshold, respectively, to significantly improve optical signal transmission performance.

Claims (8)

1. A method for transmitting optical signals across a transmission link comprising:
transmitting duobinary signals when the chromatic dispersion of the transmission link is above a predetermined dispersion threshold; and transmitting inverse-data signals when the chromatic dispersion of the transmission link is below the predetermined dispersion threshold.
2. The method of claim 1 wherein the predetermined dispersion threshold D th is about where BR is the bit-rate of the transmitted optical signals.
3. A method for generating optical signals for transmission across a transmission link comprising:
driving a dual output modulator to generate duobinary signals at a first output port and inverse-data signals at a second output port; and controlling an optical switch coupled to the modulator based on the chromatic dispersion of the transmission link to switch between transmitting the duobinary signals from the first output port across the transmission link and transmitting the inverse-data signals from the second output port across the transmission link.
4. An apparatus for transmitting optical signals across a transmission link comprising:
a modulator for generating optical signals; and bias control apparatus for controlling the bias of the modulator based on the chromatic dispersion of the transmission link to vary the waveform of the generated optical signals.
5. The apparatus of claim 4 wherein the bias control apparatus includes:
a control unit for generating a bias control signal based on the chromatic dispersion of the transmission link; and a bias control coupled to the control unit and the modulator to control the bias of the modulator to vary between null and a peak bias based on the control signal from the control unit.
6. The apparatus of claim 5 wherein the bias control is further coupled to a detector for detecting the power of the generated optical signals and generating a power monitoring signal, and wherein the bias control varies the bias of the modulator based on the control signal and the power monitoring signal to maintain a bias condition of the modulator
7. The apparatus of claim 4 wherein the waveform of the generated optical signal is varied between a duobinary signal waveform and an inverse-data signal waveform.
8. An apparatus for transmitting optical signals across a transmission link comprising:
means for transmitting optical duobinary signals when the chromatic dispersion of the transmission link is above a predetermined dispersion threshold and for transmitting inverse-data signals when the chromatic dispersion of the transmission link is below the predetermined dispersion threshold .
CA2509858A 2004-06-30 2005-06-13 Method and apparatus for optical signal transmission Expired - Fee Related CA2509858C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/881,236 2004-06-30
US10/881,236 US7409163B2 (en) 2004-06-30 2004-06-30 Method and apparatus for optical signal transmission

Publications (2)

Publication Number Publication Date
CA2509858A1 true CA2509858A1 (en) 2005-12-30
CA2509858C CA2509858C (en) 2010-02-16

Family

ID=34941731

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2509858A Expired - Fee Related CA2509858C (en) 2004-06-30 2005-06-13 Method and apparatus for optical signal transmission

Country Status (5)

Country Link
US (1) US7409163B2 (en)
EP (1) EP1612971B1 (en)
JP (1) JP4772397B2 (en)
CA (1) CA2509858C (en)
DE (1) DE602005000188T2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8155530B2 (en) * 2005-04-25 2012-04-10 The Regents Of The University Of California System and method for increasing spectral efficiency, capacity and/or dispersion-limited reach of modulated signals in communication links
JP4675721B2 (en) * 2005-08-31 2011-04-27 三菱電機株式会社 Parallel precoder circuit
JP4597820B2 (en) * 2005-09-05 2010-12-15 三菱電機株式会社 Parallel precoder circuit
US20070115916A1 (en) * 2005-11-07 2007-05-24 Samsung Electronics Co., Ltd. Method and system for optimizing a network based on a performance knowledge base
US7903981B2 (en) * 2007-01-23 2011-03-08 Ciena Corporation Software-based electro-optic modulator bias control systems and methods
JP4884338B2 (en) * 2007-09-03 2012-02-29 日本電信電話株式会社 Optical modulator driver adjustment device and adjustment method
US20110229149A1 (en) * 2010-03-22 2011-09-22 Infinera Corporation Optical transmitter supplying optical signals having multiple modulation formats
US20110299858A1 (en) * 2010-06-08 2011-12-08 Cisco Technology, Inc. Host device with multipurpose optics drive capabilities
EP2395685B1 (en) * 2010-06-10 2018-08-08 ADVA Optical Networking SE An apparatus and a method for modulation of an optical signal
EP2426836B1 (en) 2010-08-30 2017-04-12 ADVA Optical Networking SE A dual polarization transceiver
JP5786427B2 (en) * 2011-04-13 2015-09-30 富士通株式会社 Skew reduction method and optical transmission system
US20130177316A1 (en) * 2012-01-06 2013-07-11 Emcore Corporation Optical communication system, and transmitter and receiver apparatus therefor
US9768875B2 (en) * 2012-11-12 2017-09-19 Ciena Corporation Optical modulation schemes having reduced nonlinear optical transmission impairments
US11029720B2 (en) * 2019-04-16 2021-06-08 Intel Corporation Area-efficient scalable memory read-data multiplexing and latching

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4878726A (en) * 1988-11-10 1989-11-07 American Telephone And Telegraph Company Optical transmission system
FR2719175B1 (en) 1994-04-20 1996-05-31 Cit Alcatel Optical transmission method having reduced sensitivity to dispersion, and transmission system for implementing this method.
JP3094950B2 (en) * 1997-05-28 2000-10-03 日本電気株式会社 Optical transmission device and optical transmission method
JP3910003B2 (en) 2000-05-29 2007-04-25 富士通株式会社 Optical receiving station, optical communication system, and dispersion control method
US20030035179A1 (en) * 2001-08-17 2003-02-20 Innovance Networks Chromatic dispersion characterization
JP3764686B2 (en) 2002-02-07 2006-04-12 日本電信電話株式会社 Optical transmission circuit
JP3881270B2 (en) * 2002-03-26 2007-02-14 富士通株式会社 Drive control device and drive control method for optical modulator
US7197252B2 (en) * 2003-07-31 2007-03-27 Sumitomo Electric Industries, Ltd. Optical transmitter and optical communication system

Also Published As

Publication number Publication date
DE602005000188T2 (en) 2007-09-06
EP1612971A1 (en) 2006-01-04
DE602005000188D1 (en) 2006-11-30
JP2006020325A (en) 2006-01-19
US7409163B2 (en) 2008-08-05
CA2509858C (en) 2010-02-16
EP1612971B1 (en) 2006-10-18
JP4772397B2 (en) 2011-09-14
US20060002714A1 (en) 2006-01-05

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Effective date: 20180613